I hear this a lot. The counter argument is virtually no one is going from implementing chat gpt as project 1 to implementing google maps as project 2. In fact they are going from implementing v1 of google Maps to v1.1.

When I worked as a kitchen fitter there was a much greater difference between projects that anything I've experienced with a single employer as a dev. Fitting a top end kitchen in a listed 500 year old cottage is vastly different to fitting a budget kitchen in a new build, to fitting a period appropriate kitchen in a 1930s town house. Building out the next version of an API or writing a rendered, not so much.

I think a lot of Devs have a vastly inflated sense of the "uniqueness" of what they are implementing, and I think a lot of that derives from the industries obsession with reinventing the wheel, NIH syndrome and fashion driven development.